2DQB HYDROLASE, DNA BINDING PROTEIN, DNTPASE, DNTP, TRIPHOSPHOHYDROLASE, SINGLE-STRANDED DNA, DNA, DGTPASE, HD SUPERFAMILY, STRUCTURAL GENOMICS, NPPSFA, NATIONAL PROJECT ON PROTEIN STRUCTURAL AND FUNCTIONAL ANALYSES, RIKEN STRUCTURAL GENOMICS/PROTEOMICS INITIATIVE, RSGI CRYSTAL STRUCTURE OF DNTP TRIPHOSPHOHYDROLASE FROM THERMUS THERMOPHILUS HB8, WHICH IS HOMOLOGOUS TO DGTP TRIPHOSPHOHYDROLASE